I am so sorry to see your latest news.
Please accept my sincerest condolences. As you say, he is at peace now and out of pain.
I hope that once the dust settles you will be able to look back and enjoy the happy memories you and your dad made together.
He will always be with you, even when the memories dim a little, he will always be a part of who and what you are. He would have been (must have been) a very proud dad to produce such a caring daughter.
Best wishes to you and your family at this very sad time XX